Improvement in boot-trees



UNITED STATES PATENT OFFICE GEORGE W. BADGER, OF MALDEN, MASSAOHUSETTS,ASSIGNOR TO GEORGE P. OOX, OF SAME PLACE.

IMPROVEMENT IN BOOT-TREES.

Specificaton forming part of Letters Patent No. 170.462. dated November30, 1875; application filed October 25, 1875.

tion, in which- Figure 1 is a side elevation of my improved boot-tree.Fig. 2 is a longitudinal vertical section through the same. Fig. 3 is ahorizontal section on the line w a; of Fig. 1. Fig. 4' is an endelevation of the foot portion of` the boot-tree.

This invention relates to a boot-tree especially adapted for use in themanufacture of rubbe' boots; and consists in connecting the foot withthe leg by means of a long screwbolt eXtending longitudinally throughthe leg into the foot, and engaging with a nut secured within thelatter, in such a manner that, when driven into its place, the wood 011all sides except one will be conpressed, and the nut thereby be heldfirmly against the action of the heat to which the tree is subjected' inthe process of vulcanizing the boot.

To enable others skilled in the art to understand and use my invention,I will proceed to describe the manner in which I have carried it out.

In the said drawings, A represents the upper portion or leg of theboot-tree, which is cut away at its lower end for the reception of therear end of the foot B, the latter being provided with a tenon, c, whichfits into a corresponding groove, d, in the leg, and thus serves as aguide to insure the accurate fitting together of the two portions A B.Through the leg A is bored an aperture, e, through which passes a longbolt or rod, f, which en- -ters an aperture, g, in the foot-piece, itslower end being provided with a screw-thread, which engages with a nut,h, secured within a recess, 5, formed at right angles to andintersecting the aperture g, a wooden plug, i, being driven in after theinsertion of the nut. This recess 5 is of rectangular form incross-section, as seen in Fig. 4:, corresponding to that of the nut h,-but the recess is of such size as to rebeing suddenly struck by thelower end of the bolt f when inserted, as ot'ten occurred when the nutwas placed within a circular aperture and afterward plugged, asheretofore, is entirely avoided, and the nut is thus always in, a properposition to receive the screw-thread at the lower end of the bolt f. Atthe upper end of the bolt is a loop, Ic, which bears upon a Washer, l,and thus, when the bolt is turned so as to enter the nut, the foot andleg are held firmly together, as required. This bolt may be turned bytaking hold of the loop with the finger and thumb, or by means of ashort bar or rod passed through the loop.

The above-described tree serves as a form on which the rubber boot ismade, after which the tree, with the boot thereon, is suspended withinthe vulcanizing-chanber, ahook passing through the loop at the upper endof the bolt f, or other suitable device being employed for this purpose.After the vulcanization has been completed, the tree, with the bootthereon, is taken down, and the bol-t f turned so as to disconnect thefoot from the leg, when the latter may be drawn out of the boot, afterwhich the foot is removed by means of a suitable hook orby hand.

What I claim as my invention, and desire to secure by Letters Patent, is

In a boot-tree for vulcanizing rubberboots, the foot-piece A, providedwith the nut h, secured within the foot, and surrounded with wood on allsides, as and for the purpose described.

Witness my hand this 21st day of October, A. D. 1875.

GEORGE W. BADGER.

In presence of-- P. E. TESCHEMACHER, W. J. OAMBRIDGE.

